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International Journal of Parallel, Emergent and Distributed Systems Volume 35, 2020 - Issue 3: Smart Computing and Communication
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Original Articles

TDCS: a new scheduling framework for real-time multimedia OS

Wei HuCollege of Computer Science and Technology, Wuhan University of Science and Technology, People’s Republic of China;DMT Lab, Birmingham City University, UK;Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System, People’s Republic of ChinaCorrespondence[email protected]
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Tianao MaCollege of Computer Science and Technology, Wuhan University of Science and Technology, People’s Republic of China;DMT Lab, Birmingham City University, UK;Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System, People’s Republic of ChinaView further author information
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Yonghao WangDMT Lab, Birmingham City University, UK;Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System, People’s Republic of ChinaORCID Iconhttps://orcid.org/0000-0002-4924-2508View further author information
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Fangfang XuCollege of Computer Science and Technology, Wuhan University of Science and Technology, People’s Republic of China;Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System, People’s Republic of ChinaView further author information
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Joshua ReissCentre for Digital Music, Queen Mary University of London, UKView further author information
Pages 396-411 | Received 23 Nov 2017, Accepted 15 Oct 2018, Published online: 20 Nov 2018
 
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ABSTRACT

The emerging real-time hyper-physical system (CPS), such as autonomous vehicle and live interactive media application, requires time deterministic behaviour. This is challenging to achieve by using the traditional general purpose operating system (GPOS). This paper presents a new design of the real-time operating system (OS) scheduling mechanism called ‘time deterministic cyclic scheduling’ (TDCS) mainly for live multimedia tasks processing. This new scheduler shares a similar philosophy as classic cyclic execution but with flexibility and dynamic configuration. This hybrid design is based on both time-reserved based cyclic execution and priority-based pre-emptive scheduling for mixed criticality applications. The simulation results show that this scheduling scheme can achieve predictable timing behaviour of task delay and jitter under high CPU utilisation. This shows that the proposed scheme is promising for low latency high-performance multimedia censoring tasks that occur in a periodic manner.

GRAPHICAL ABSTRACT

Additional information

Funding

This work was supported by National Natural Science Foundation of China: [Grant Number 61602350].

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